CN109813049A - Refrigerator drainpipe ice stifled detection method and detection device - Google Patents
Refrigerator drainpipe ice stifled detection method and detection device Download PDFInfo
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- CN109813049A CN109813049A CN201811626905.4A CN201811626905A CN109813049A CN 109813049 A CN109813049 A CN 109813049A CN 201811626905 A CN201811626905 A CN 201811626905A CN 109813049 A CN109813049 A CN 109813049A
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- 238000001514 detection method Methods 0.000 title claims abstract description 55
- 230000008859 change Effects 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 230000006872 improvement Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Defrosting Systems (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Present invention discloses detection method and detection device that a kind of refrigerator drainpipe ice blocks up, the drainpipe is connected to the storage compartment of the refrigerator, and wherein detection method includes the following steps: to close when refrigerator doors, and when beginning defrost, is started in next step；Detect the temperature for storing compartment and corresponding atmospheric pressure value；According to the variation relation of temperature and atmospheric pressure value, determining drainpipe, whether ice is stifled.In refrigerator defrost, temperature is increased, when causing air pressure to increase, the situation of change for detecting ice the temperature inside the box and air pressure judges that the drainpipe ice of refrigerator is stifled when the variation of temperature and air pressure exceeds preset value, in refrigerator defrost, it needs to drain by drainpipe, and detects drainpipe ice at this time and block up, judgement is timely, the problem of there is no drainpipes when supplying drainage ice not to work, the time warping that drainpipe is blocked up when working by ice.
Description
Technical field
The present invention relates to the stifled detection method of refrigerator art more particularly to a kind of refrigerator drainpipe ice and detection dresses
It sets.
Background technique
The discharge outlet of refrigerator defrost at present is used to for defrosting water being discharged to outdoor between the storage of refrigerator by drainpipe, but drains
For pipe sometimes because temperature is too low, inner icing causes ice stifled, and defrosting water can not be discharged and be gathered in chamber interior between refrigerator storage, after
And freeze in refrigerator inside, cause using upper inconvenience, in addition can also contaminated food, or even the problems such as cause electric fault；If
Regular heating drain pipe will cause energy waste, or block up deicing under situation without ice, and the state deicing that has ice stifled is not in time
Problem.
Summary of the invention
Drainpipe ice to solve the problems, such as refrigerator in the prior art is stifled, and the purpose of the present invention is to provide a kind of refrigerators
Drainpipe ice stifled detection method and detection device.
One of for achieving the above object, one embodiment of the invention provides a kind of detection side that refrigerator drainpipe ice is stifled
Method, the drainpipe are connected to the storage compartment of the refrigerator, include the following steps:
When refrigerator doors are closed, and start defrost, start in next step；
Detect the temperature for storing compartment and corresponding atmospheric pressure value；
According to the variation relation of temperature and atmospheric pressure value, determining drainpipe, whether ice is stifled.
Further improvement as an embodiment of the present invention, the temperature and corresponding air pressure of the detection storage compartment
Value；According to the variation relation of temperature and atmospheric pressure value, determine that drainpipe ice is stifled, comprising:
Detect indoor initial temperature and initial gas pressure between the storage；
Detect the variation of room pressure between the storage；
Under the conditions of certain temperature, when the value of air pressure change is more than or equal to default maximum difference, judgement drainpipe ice is stifled.
Further improvement as an embodiment of the present invention, the temperature and corresponding air pressure of the detection storage compartment
Value；According to the variation relation of temperature and atmospheric pressure value, determine that drainpipe ice is stifled, comprising:
Detect indoor temperature and corresponding atmospheric pressure value between storing described in different moments；
The temperature gap for calculating different moments temperature change calculates the draught head of the atmospheric pressure value variation of corresponding different moments
Value；
Compare the temperature gap at corresponding moment and the relationship of the air pressure difference, when the temperature gap and draught head
When the changing value ratio of value is more than or equal to default ratio, determine that drainpipe ice is stifled.
Further improvement as an embodiment of the present invention, further comprises the steps of:
During refrigerator defrost, when detecting that refrigerator doors are opened, it is stifled to stop detection drainpipe ice.
Further improvement as an embodiment of the present invention, further comprises the steps of:
When drainpipe ice is stifled, deicing is heated to the drainpipe, and defrost terminates preceding continuous heating.
One of for achieving the above object, one embodiment of the invention provides a kind of detection dress that refrigerator drainpipe ice is stifled
It sets, the refrigerator includes storage compartment and water-storing tray, and the drainpipe is inserted into the water-storing tray, and the detection device includes being used for
The open-close detection apparatus whether detection refrigerator doors close, and indoor pressure test device and temperature are set between the storage
Detection device, and memory and processor for recording and handling air pressure and temperature.
Further improvement as an embodiment of the present invention, it is indoor first between the pressure test device detection storage
Beginning air pressure, the temperature-detecting device detect indoor initial temperature between the storage；
The pressure test device detects the variation of room pressure between the storage；
The processor compares under the conditions of certain temperature, and whether the value of air pressure change is more than or equal to default maximum difference,
And whether ice is stifled according to result judgement drainpipe.
Further improvement as an embodiment of the present invention, the pressure test device detect atmospheric pressure value, the temperature inspection
It surveys device and detects temperature, the processor calculates the temperature gap of different moments temperature change, calculates corresponding different moments
The air pressure difference of atmospheric pressure value variation；
The processor relatively corresponds to the temperature gap at moment and the relationship of the air pressure difference, when the temperature difference
When the ratio of value and air pressure difference is more than or equal to default ratio, determine that drainpipe ice is stifled.
Further improvement as an embodiment of the present invention, during refrigerator defrost, the open-close detection apparatus is persistently examined
Survey whether refrigerator doors are opened.
Heating device is arranged in further improvement as an embodiment of the present invention, the drainpipe outside.
Compared with prior art, the invention has the following advantages: temperature increases in refrigerator defrost, lead to air pressure liter
When high, the situation of change of ice the temperature inside the box and air pressure is detected, when the variation of temperature and air pressure exceeds preset value, judges ice
The drainpipe ice of case is stifled, in refrigerator defrost, needs to drain by drainpipe, and detects drainpipe ice at this time and block up, and judgement is timely,
The problem of there is no drainpipes when supplying drainage ice not to work, the time warping that drainpipe is blocked up when working by ice.
Detailed description of the invention
Fig. 1 is the flow chart of the stifled detection method of the 1st embodiment refrigerator drainpipe ice of the invention；
Fig. 2 is the flow chart of the stifled detection method of the 2nd embodiment refrigerator drainpipe ice of the invention；
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionally
Transformation is included within the scope of protection of the present invention.
Embodiment 1
One embodiment of the invention provides a kind of refrigerator drainpipe ice stifled detection device, the refrigerator include storage compartment and
Water-storing tray, the drainpipe are inserted into the water-storing tray, and the detection device includes the opening and closing whether closed for detecting refrigerator doors
Detection device, and be arranged between the storage indoor pressure test device and temperature-detecting device, and for record and
Handle the memory and processor of air pressure and temperature.
Specifically, drainpipe is inserted into water-storing tray, and the water surface elevation in water-storing tray is higher than the water outlet of the drainpipe,
When becoming negative pressure in refrigerator, the water surface elevation in drainpipe can be higher than the water surface elevation of water-storing tray, when air pressure becomes in refrigerator
When atmospheric pressure, the water surface elevation in drainpipe is equal with the water surface elevation of water-storing tray, when air pressure is greater than atmospheric pressure in refrigerator, deposits
The water surface elevation of water pond can be higher than the water surface elevation in drainpipe；
The open-close detection apparatus includes the magnet being arranged in one of refrigerator body or refrigerator door, and setting
Magnet-sensitive switch on wherein another, when refrigerator doors are separated with storage compartment, change in location between magnet and magnet-sensitive switch is drawn
The changes of magnetic field that magnet-sensitive switch detects is played, to detect that refrigerator doors are opened, alternatively, it is also possible to use traditional mechanical rotation
The sensor of refrigerator doors opening and closing can be detected by turning on pass or other；
The pressure test device is for detecting refrigerator inside air pressure, when refrigerator doors are opened, indoor air pressure between storage
It is equal with atmospheric pressure, when refrigerator doors are closed, since internal temperature of refrigerator is low, it will form negative pressure, pressure test device detects
Refrigerator inside air pressure reduces, and temperature-detecting device measures internal temperature of refrigerator reduction；
In refrigerator work and the stifled non-ice of drainpipe, inside becomes negative pressure, and the water surface elevation in drainpipe is higher than water-storing tray
Interior water surface elevation can make indoor temperature between storage rise 3~5 ° when refrigerator defrost, it will usually lead to interior between storage
Air pressure rise, cause the water surface elevation in drainpipe to decline, the variation of the volume as caused by the lifting of water, the gas in refrigerator
Pressure amplitude of variation is alleviated；No longer there is water surface elevation when drainpipe is blocked up by ice, in drainpipe to become with the variation of air pressure
Change, therefore when the raising of ice the temperature inside the box, air pressure will directly increase.
In addition, setting heating device is melted by way of heating when detecting that drainpipe ice is blocked up on the outside of the drainpipe
Ice inside changing.
The storage compartment of the stifled detection method of the refrigerator drainpipe ice of the present embodiment, the drainpipe and the refrigerator connects
It is logical, include the following steps:
When refrigerator doors are closed, and start defrost, start in next step；
Detect the temperature for storing compartment and corresponding atmospheric pressure value；
According to the variation relation of temperature and atmospheric pressure value, determining drainpipe, whether ice is stifled.
Further, indoor initial temperature T0 and initial gas pressure P0 between the storage is detected；
The variation for detecting room pressure between the storage, is denoted as P for real-time air pressure；
Under the conditions of certain temperature, when the value Δ P of air pressure change is more than or equal to default maximum difference Δ Pmax, judgement draining
Pipe ice is stifled.
Specifically, when persistently freezing in refrigerator, the air pressure in usual refrigerator can be gradually decreased, until maintain to one compared with
Low pressure-reduction level, according to formula: PV=nRT, i.e., when given volume, the variation of air pressure and the variation of temperature are related, work as temperature
Degree increases, and when volume increases, the increase amplitude of air pressure slows down；When refrigerator defrost, the temperature of refrigerator inside is gradually risen, if row
Non- ice is stifled in water pipe, causes the liquid level in the drainpipe for being higher than the water-storing tray water surface to be originally gradually reduced, leads to internal body
Product will be slow raising, slow down so that air pressure increases amplitude, and when ice is stifled in drainpipe, due to being condensed in drainpipe by ice, lead
The volume of refrigerator inside is caused no longer to change, at this point, temperature increases the direct raising that will lead to air pressure, gas when ice is stifled in drainpipe
It is showed when being blocked up in the relationship and drainpipe between pressure raising and temperature raising without ice entirely different.
Indoor initial temperature T0 and initial gas pressure P0 between the storage is detected, when initial temperature T0 indoor between storage is certain
When, drainpipe is in the case that ice is stifled, and temperature, which increases the attainable maximum value of institute, and air pressure increases an attainable maximum value is
Certain, remember that the default maximum difference of air pressure change at this time is Δ Pmax；When drainpipe ice blocks up, refrigerator inner volume is certain, in temperature
When degree is increased to maximum value, the attainable maximum value of air pressure institute is greater than the stifled attainable maximum value of institute of not ice, at this time P-P0=Δ P
>=Δ Pmax can determine that drainpipe ice is stifled.
It is stored in advance in the relationship of different initial temperature T0 and Δ Pmax in memory, is when needing to detect drainpipe
When no ice blocks up, lower attainable Δ P of same T0 is made comparisons with Δ Pmax, that is, can determine whether that the ice under different initial temperatures blocks up feelings
Condition.
Further, during refrigerator defrost, when detecting that refrigerator doors are opened, it is stifled to stop detection drainpipe ice；
Since the ice of the drainpipe is stifled, compartment is stored when refrigerator doors are opened dependent on the relationship of detection temperature and air pressure
Internal air pressure is equal to atmospheric pressure, and internal temperature is equal to room temperature, and usually will form negative pressure after refrigeration for refrigerator, in refrigerator,
The phenomenon that after opening refrigerator doors at this time, air pressure inside can be equal with external atmosphere pressure, also will form air pressure raising and temperature raising,
Therefore it needs under the premise of refrigerator doors are closed always, judges that drainpipe ice is stifled by detection atmospheric pressure value and temperature value, work as refrigerator
When door is opened, stops detection and avoid because the change of environment influences judging result.
Further, when drainpipe ice is stifled, deicing is heated to the drainpipe, and defrost terminates preceding continuous heating；
Specifically, can there are problems that continuing to drip in drainpipe when defrost is not finished, the water of defrost is again in order to prevent
Secondary ice blocks up drainpipe, and heating process is continueed to that defrost terminates.
Compared with prior art, the present embodiment has the advantages that
(1) in refrigerator defrost, temperature is increased, and when causing air pressure to increase, detects the variation of ice the temperature inside the box and air pressure
Situation judges that the drainpipe ice of refrigerator is stifled, in refrigerator defrost, needs to lead to when the variation of temperature and air pressure exceeds preset value
Drainpipe draining to be crossed, and detects drainpipe ice at this time and blocks up, judgement in time, does not work there is no drainpipe when supplying drainage ice,
The problem of time warping that drainpipe is blocked up when working by ice.
(2) it by being detected to the case where air pressure change under identical initial temperature, by the changing value of air pressure and presets most
Big difference compares, and judges that the ice of drainpipe blocks up situation, and it is stifled to take measures in the case where drainpipe ice is stifled to exclude ice, sentences
Disconnected process is simple, as a result reliably.
Embodiment 2
Join Fig. 2 provided by another embodiment, the present embodiment the difference from embodiment 1 is that: to drainpipe ice block up sentence
Disconnected program is different.
Specifically, temperature T1, T2 of the temperature-detecting device detection different moments, the pressure test device detection pair
Atmospheric pressure value P1, the P2 for the different moments answered, the temperature gap T2-T1=Δ T1 of different moments temperature change is calculated, calculates and corresponds to
The air pressure difference P2-P1=Δ P1 of the atmospheric pressure value variation of different moments；
The relationship for comparing the temperature gap Δ T1 and the air pressure difference DELTA P1, when the temperature gap and air pressure difference
Ratios delta P1/ Δ T1=k when being more than or equal to default ratio, determine that drainpipe ice is stifled.
According to formula PV=nRT, when drainpipe ice is stifled, inner volume is certain in refrigerator, the relationship of temperature and air pressure change,
It is P1V=nRT1 and P2V=nRT2 respectively, two formula subtract each other, i.e. (P2-P1) V=nR (T2-T1), that is, Δ P1V=nR
Δ T1, Δ P1 are proportional to Δ T1；It is one that inner volume, which can generate real-time variation and V not, when ice is not stifled for drainpipe, in refrigerator
Constant amount, above-mentioned relation are not present, when increasing mutually synthermal, what the variation of air pressure changed when stifled relative to drainpipe ice
It is small, that is to say, that for identical temperature gap Δ T1, drainpipe when ice is not stifled Δ P1 be less than drainpipe ice it is stifled when Δ P1,
Caused by Δ P1/ Δ T1=k ratio it is different, when k is more than or equal to default ratio, determines that drainpipe ice is stifled, preset ratio setting
Attainable maximum value when ice is not stifled for drainpipe.
Due to refrigerator in use, internal storage article is different, the temperature difference that volume is different, needs to freeze, refrigerator are occupied
The environment of work usually changes, and the absolute value of air pressure change is usually little, in order to avoid volume change generates air pressure change
Influence and air pressure change the little problem of absolute value, the present embodiment is by the relationship between air pressure change and temperature change
Illustrate the air pressure in refrigerator when the case where variation between air pressure and temperature being greater than default maximum changing value as judgment criteria
Variation abnormality, principle is similar to the relationship of the case where detected slope changes or velocity variations and acceleration change, according to slope
Variation when excluding refrigerator work environmental change, detects the interference of inaccuracy caused by the variation of air pressure numerical value is smaller.
Compared with prior art, the present embodiment has the advantages that by changing between detection air pressure and temperature
Relationship, when the acquirement of the difference of temperature is smaller, as a result more accurate, the interference and air pressure that avoid environmental change from generating and temperature
The absolute value of difference is small to be difficult to the problem of differentiating, thus detect the stifled anomalous variation relative to not ice when stifled of drainpipe ice, from
And judge that drainpipe ice is stifled.
Illustrating only for feasible embodiment of the invention is described in detail in those listed above, they are simultaneously
It is non-to limit the scope of the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention or change should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of stifled detection method of refrigerator drainpipe ice, the drainpipe are connected to the storage compartment of the refrigerator, feature
It is, includes the following steps:
When refrigerator doors are closed, and start defrost, start in next step；
Detect the temperature for storing compartment and corresponding atmospheric pressure value；
According to the variation relation of temperature and atmospheric pressure value, determining drainpipe, whether ice is stifled.
2. detection method according to claim 1, which is characterized in that the temperature and correspondence of the detection storage compartment
Atmospheric pressure value；According to the variation relation of temperature and atmospheric pressure value, determine that drainpipe ice is stifled, comprising:
Detect indoor initial temperature and initial gas pressure between the storage；
Detect the variation of room pressure between the storage；
Under the conditions of certain temperature, when the value of air pressure change is more than or equal to default maximum difference, judgement drainpipe ice is stifled.
3. detection method according to claim 1, which is characterized in that the temperature and correspondence of the detection storage compartment
Atmospheric pressure value；According to the variation relation of temperature and atmospheric pressure value, determine that drainpipe ice is stifled, comprising:
Detect indoor temperature and corresponding atmospheric pressure value between storing described in different moments；
The temperature gap for calculating different moments temperature change calculates the air pressure difference of the atmospheric pressure value variation of corresponding different moments；
Compare the temperature gap at corresponding moment and the relationship of the air pressure difference, when the temperature gap and air pressure difference
When ratio is more than or equal to default ratio, determine that drainpipe ice is stifled.
4. detection method according to claim 1, which is characterized in that further comprise the steps of:
During refrigerator defrost, when detecting that refrigerator doors are opened, it is stifled to stop detection drainpipe ice.
5. detection method according to claim 1, which is characterized in that further comprise the steps of:
When drainpipe ice is stifled, deicing is heated to the drainpipe, and defrost terminates preceding continuous heating.
6. a kind of stifled detection device of refrigerator drainpipe ice, the refrigerator includes storage compartment and water-storing tray, and the drainpipe is inserted
Entering the water-storing tray, which is characterized in that the detection device includes the open-close detection apparatus whether closed for detecting refrigerator doors,
And be arranged between the storage indoor pressure test device and temperature-detecting device, and for record and handle air pressure and
The memory and processor of temperature.
7. detection device according to claim 6, which is characterized in that the pressure test device detects the storage compartment
Interior initial gas pressure, the temperature-detecting device detect indoor initial temperature between the storage；
The pressure test device detects the variation of room pressure between the storage；
The processor compares under the conditions of certain temperature, and whether the value of air pressure change is more than or equal to default maximum difference, and root
According to result judgement drainpipe, whether ice is stifled.
8. detection device according to claim 6, which is characterized in that the temperature of the temperature-detecting device detection different moments
Degree, the atmospheric pressure value of the pressure test device detection different moments, the processor calculate the temperature of different moments temperature change
Difference calculates the air pressure difference of the atmospheric pressure value variation of corresponding different moments；
The processor relatively corresponds to the temperature gap at moment and the relationship of the air pressure difference, when the temperature gap with
When the ratio of air pressure difference is more than or equal to default ratio, determine that drainpipe ice is stifled.
9. detection device according to claim 6, which is characterized in that during refrigerator defrost, the open-close detection apparatus
Persistently whether detection refrigerator doors are opened.
10. detection device according to claim 6, which is characterized in that heating device is arranged on the outside of the drainpipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811626905.4A CN109813049B (en) | 2018-12-28 | 2018-12-28 | Method and device for detecting ice blockage of refrigerator drain pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811626905.4A CN109813049B (en) | 2018-12-28 | 2018-12-28 | Method and device for detecting ice blockage of refrigerator drain pipe |
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| Publication Number | Publication Date |
|---|---|
| CN109813049A true CN109813049A (en) | 2019-05-28 |
| CN109813049B CN109813049B (en) | 2021-01-01 |
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| CN201811626905.4A Active CN109813049B (en) | 2018-12-28 | 2018-12-28 | Method and device for detecting ice blockage of refrigerator drain pipe |
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| Publication number | Publication date |
|---|---|
| CN109813049B (en) | 2021-01-01 |
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